The World Trade Center's Construction: 8 Surprising Facts | HISTORY
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When Were the Twin Towers Built? | HowStuffWorks
When Were the Twin Towers Built? | HowStuffWorks
Facts You Didn't Know About the Original World Trade Centers | Architectural Digest
World Trade Center (1973–2001) - Wikipedia
World Trade Center | History, Height, Memorial, & Facts | Britannica
Freedom Tower is out, World Trade Center is in
The man behind the rebuilding of 9/11's Ground Zero | Reuters
Ground Zero rebuilding still continues in New York, 20 years after 9/11 | PBS NewsHour
Four Decades at the World Trade Center in Pictures
One World Trade Center – SOM
Footage of the Twin Towers Being Built (1976) – The Public Domain Review
Remembering September 11
As the twin towers burned on September 11, hundreds of people became trapped in narrow stairwells - ABC News
History of the world's tallest skyscrapers
The History of the Twin Towers Design and Architecture - Bloomberg
World Trade Center (1973–2001) - Wikipedia
What Were the Twin Towers? - Who HQ
:max_bytes(150000):strip_icc()/architecture-911destruction-1162748-crop-5b6c64e446e0fb0050cbe33c.jpg "Rebuilding the World Trade Center: A Photo Timeline")
Rebuilding the World Trade Center: A Photo Timeline
The World Trade Center, by the Numbers | HISTORY
Construction of the World Trade Center - Wikipedia
What Were the Twin Towers?: 9781338100280: Books - Amazon.ca
